What is the average velocity of a car that travels 450 km north in 9.0 hours?

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created

In which item is energy stored in the form of gravitational potential energy? a. a slice of bread b. a compressed spring c. an apple on a tree d. a stretched bow string

Suppose two stars are located in region a of the h-r diagram shown in the figure below. star c appears much dimmer than star y as seen from earth. which star can be inferred to be nearer to earth and how do you know?